This file points to 6 pairs of files of the form    "?pt*"
("?" is a single-character wildcard and "*" is a multiple-character wildcard.)

Crossing File	Backbone Overlay
1pt6_A	1pt6_A_sse
1ptf	1ptf_sse
1ptm_A	1ptm_A_sse
1ptq	1ptq_sse
2ptd	2ptd_sse
2pth	2pth_sse